Pharyngeal carcinoma and natural killer cell activity.

An evaluation of natural killer cell activity was performed in 42 patients with pharyngeal carcinoma. Compared with age- and sex-matched control subjects, the cancer patients expressed significantly lower cytotoxicity against K562 target cells (68 +/- 8 lytic units versus 99 +/- 8 lytic units, p less than 0.01), with 52 percent of the patients expressing… (More)